Industrial product comprising a soldering substance for aluminium with process for obtaining it



INDUSTRIAL PRODUCT comrmsme A SOLDERING sUBs'rAncn rnocnss ron OBTAINING IT.

N D STATES PATENT OFFICE. 4

ANGEL mnn'rn AY LA, or MADRID, SPAIN.

No Drawing.

To all whom it may concern:

Be it known that I, ANGEL M RETE AYAIZA, subject of the. King of Spain, residing at Madrid, Spain, have invented a new and use-- ful Industrial Product Comprising a Soldering Substance for Aluminium with Brocesses for Obtaining It; and I do hereby declare the following to be a full, clear, and

stronger thansolders previously known, but 'which is comparatively inexpensive, as re- A .J gards both manufacture and ingredients.

My new soldering substance is composed essentially of zinc, tin and lead in proportions which may vary according to the results to be obtained. 1 Extreme limits of the components areas follows:

Zinc from 20% to 70%. Tim .from 15% to 60%. Lead .from 10% to 50%.

creased, that of another or the others will be diminished and vice versa.

The process according to the present invention is as follows: I

In a crucible is first put tin, the same being heated until it fuses; afterward lead is added and heateduntil it is melted and the two said metals are stirred in order to mix -them intimately. This operation being finished, zinc is put into the crucible and also melted, and immediately afterward a little more tin and lead are added at the same time. When the mixture is completely melted, it is preferably agitated with an iron or the like, in order to get all the metals well mixed and in a uniform condition,-

Speciflcationof Letters Patent.

ron ALUMINIUM WITH Patented Mar. 9, 1920.

Application filed March 8, 1919. Serial No. 281,492.

I forming a mixture of regular composition,

as otherwise the heavier component would settle underneath the other. When the mixture is'completed, the same is poured into molds of a convenient shape and left there for cooling.

Soldering with this new soldering substance is efi'ected in the usual way, and it is pointed out that its point of fusion varies between 180 and 250 C.

The strength of my new soldering substance reaches 8% kilos per square mil1imeter, depending on the proportions of the mixture.

, As the point of fusion, as above stated,-

tion with an autogene blowing pipe, or a blowing pipe for gas or a simple soldering lamp, because the indicated point of fusion admits of the use of any one of these apparatus. p Q I Practice has shown that the proportions,

. above indicated, of my soldering substance can be restricted and that this substance can be obtained advantageously by the follow- Within this scale of proportions different mixtures can be chosen, according to the strength desired. As an example it.'is observed that very good results are obtained with a mixture of 37% to 43% of zinc, 35%

to 42% of tin and 17% to 24% of lead.

My soldering substance possesses the further advantage that no acids nor fusing sub stances are required in the use thereof.

While I have described specific preferable features of the invention, I wish it understood that the same is not limited except as indicated by the appended claims.

What is claimed is:

l. A newsoldering substance for aluminium composed. of zinc, tin and lead, zinc being included in the proportion of 37% to 43%, tin in the proportion of 37% to 42%, and lead in the proportion of 17% to 24%,

the fusion point of the solder varying'from 180 to 250 C. Y

2. A methodof making solder, including melting tin in a, Crucible, adding lead to the molten tin, mixing the molten tin and lead,

adding zinc to the molten tin and lead .adding simultaneously tin and lead at the ANGEL MIRETE AYALA 5 moment the zinc melts, stirring the mixture, Witnemes:

and pouring the same into a, mold. R. DE SALAR,

In testimony whereof I have signed my LEON GOMEZ HEREDIA.

two subscribing Witnesses.

name to this specification in the presence of. 

